title: A timely re-examination of drug polymorphism in pharmaceutical development and regulation.
mesh_terms: D002623:Chemistry Techniques, Analytical; D002626:Chemistry, Pharmaceutical; D003460:Crystallization; D003461:Crystallography; D017277:Drug Approval; D008968:Molecular Conformation; D004364:Pharmaceutical Preparations / Q000737:chemistry* / Q000592:standards; D044367:Phase Transition; D011786:Quality Control; D013816:Thermodynamics; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D004364:Pharmaceutical Preparations